EP3849019B1 - Borne de raccordement de conducteur - Google Patents

Borne de raccordement de conducteur Download PDF

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Publication number
EP3849019B1
EP3849019B1 EP21150398.2A EP21150398A EP3849019B1 EP 3849019 B1 EP3849019 B1 EP 3849019B1 EP 21150398 A EP21150398 A EP 21150398A EP 3849019 B1 EP3849019 B1 EP 3849019B1
Authority
EP
European Patent Office
Prior art keywords
conductor
spring
section
busbar
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21150398.2A
Other languages
German (de)
English (en)
Other versions
EP3849019A1 (fr
Inventor
Jörg Ahldag
Rudolf Mastel
Cord-Henrik LICHT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wago Verwaltungs GmbH
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Wago Verwaltungs GmbH
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Publication of EP3849019A1 publication Critical patent/EP3849019A1/fr
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Publication of EP3849019B1 publication Critical patent/EP3849019B1/fr
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/2491—Terminal blocks structurally associated with plugs or sockets

Definitions

  • the invention relates to a conductor connection terminal according to the preamble of claim 1.
  • connection terminals are already known from the prior art. According to the DE 197 35 786 A1 reduces the contact force in electrical conductors made of aluminum and aluminum alloys due to creep, so that a connection terminal with two contact legs is proposed, which jointly act on a conductor inserted into the connection terminal. In this case, the contact surface of one contact leg is curved on the conductor, while the contact surface of the other contact leg abuts the conductor with sharp edges. Overall, with the terminal according to the DE 197 35 786 A1 result in safer contacting and improved force distribution to prevent the conductor from being crushed.
  • the CN 102354831A discloses a spring-loaded terminal connection for clamping an electrical conductor to a busbar, in which a loop-shaped clamping spring is provided with a clamping leg with a clamping edge directed towards the electrical conductor.
  • a second clamping leg is bent back from the clamping leg in the form of a loop, counter to the conductor insertion direction. This forms another arcuate contact point with the conductor.
  • the free end of the second clamping leg acts on the first clamping leg with the support of a spring force.
  • the DE 20 2011 110 604 U1 describes a spring pressure piece and an electrical connector with such a spring pressure piece.
  • the spring pressure piece has two end areas that form two contact areas with an adjacent contact pin can, as well as a central area lying between the end areas.
  • the spring pressure piece is geometrically shaped in such a way that an acute angle is formed between one contact area and the central area and an obtuse angle is formed between the other contact area and the central area. In this way, two contact points can be produced with a narrow design using a spring pressure piece.
  • a small-sized connecting terminal is to be specified, the connecting terminal being a double terminal with two conductor entry openings and two spring-loaded terminal connections.
  • an extended end section of the contact leg of a first and/or second clamping spring is hooked into a through-opening in the busbar in order to use a particularly compact busbar for fastening the clamping springs.
  • the object of the invention is to provide a conductor connection terminal with a compact design and improved contacting.
  • the contact leg of the clamping spring has an elastic, deflectable spring section with a ramp for guiding the conductor to be connected, starting from the spring bow behind the bearing of the contact leg on the busbar.
  • This provides a conductor connection terminal with which the conductor to be connected is reliably contacted and clamped not only with the clamping leg but also with a spring section of the contact leg. Due to the deflectability and elasticity of the spring section, electrical conductors can be of different shapes Diameter are held securely and acted upon with sufficient spring force. Due to the deflectability of the spring section, conductors with a large conductor cross-section or diameter are subjected to sufficient spring force on the part of the clamping leg and the spring section without the conductor undergoing undesired deformation, for example as a result of squeezing, pressing, pressing, clamping or forcing or the like.
  • conductors with a small conductor cross-section or diameter are also contacted and clamped particularly securely due to the spring section, which in this case experiences less deflection due to the inserted conductor, and the clamping leg.
  • the conductor runs onto the ramp, a different contact overlap occurs depending on the conductor cross-section and conductor diameter.
  • the ramp is also optimally adapted to each conductor inserted into the conductor terminal, since the spring section is deflected according to the conductor diameter and the ramp is thereby optimally positioned itself.
  • the deflection of the spring section and the spring force are dependent on the cross-section of the inserted conductor. Conductors with a smaller cross-section result in less deflection and a lower contact pressure of the spring section. Conductors with a larger cross-section cause a larger deflection and a larger contact pressure of the spring section.
  • the contact force is understood to mean a force that acts in the normal direction against another body and results from the pressure multiplied by the area when the load is evenly distributed.
  • the function of the ramp is no longer dependent on the conductor insertion force, but on the spring force of the spring section, so that the insertion of an electrical conductor is facilitated.
  • the conductor connection terminal is also suitable for applications with small installation spaces and space conditions.
  • the conductor connection terminal can be produced easily and inexpensively, in particular due to the uncomplicated clamping spring and busbar construction, which can also be preassembled as a contact insert.
  • the contact insert can be used without difficulty in the opposite direction to a demoulding direction of an insulating material housing, so that the assembly of the conductor connection terminal is also made easier and faster.
  • the elastic, deflectable spring section of the contact leg is an area between the free end of the contact leg and the spring bow, more precisely between the free end of the contact leg and the bearing of the contact leg on the conductor rail.
  • a part of the contact leg namely the part designed as a spring section, can thus be displaced with respect to an initial position. This displacement takes place against the spring force of the spring section and thus generates a pretension in the spring section, which acts as a spring force on an electrical conductor lying against the spring section.
  • other parts of the contact leg such as a section between the spring bow and the bearing of the contact leg on the conductor rail, also have a certain elasticity or deflectability.
  • the other parts of the contact leg away from the spring section can also have a higher rigidity than in the spring section, in order to enable stable support of the clamping spring against the busbar and/or the insulating material housing.
  • the spring section can extend from the bearing point to the free end in order to enable the spring section to have the highest possible elasticity and deflectability.
  • the spring portion may also be spaced from the point of support and/or spaced from the free end to provide a more stable abutment leg.
  • the clamping spring is arranged within the conductor connection terminal in such a way that, viewed in the conductor insertion direction, the free end of the contact leg is arranged behind the free end of the clamping leg.
  • the clamping leg is closer arranged at a wire insertion hole as the abutment leg.
  • the clamping leg is the leg of the clamping spring that faces a conductor insertion opening
  • the contact leg is a leg of the clamping spring that faces away from the conductor insertion opening.
  • a first section of the busbar extends essentially parallel to the conductor insertion direction, while a second section of the busbar protrudes at an angle from the first section, for example extending transversely thereto.
  • the first and the second section can have a geometry approximating a T-shape.
  • the second section may also extend at acute or obtuse angles from the first section.
  • the end of the second section facing away from the first section can transition into a third section of the busbar, which extends essentially parallel to the direction of conductor insertion on a side of the insulating material housing that is opposite to an inserted conductor.
  • the contact leg can be supported on the busbar in a variety of ways, with the busbar being designed both as a fixed bearing and as a floating bearing for the contact leg.
  • the second section of the busbar has a recess according to the invention, through which the contact leg of the clamping spring is guided, so that the contact leg is mounted on the second section of the busbar.
  • the conductor rail can have further recesses and, for example, also support the clamping leg of the clamping spring.
  • the clamping spring can have other bearing points within the conductor connection terminal.
  • the contact leg and/or the spring bow can rest or rest on or against the inner surfaces of the insulating material housing.
  • the bevel of the spring section is used to guide the conductor to be connected.
  • a ramp is a contact surface that is set at an angle to the inserted conductor, which allows the conductor to gradually run onto the contact leg with reduced insertion resistance and thus easier insertion of the conductor.
  • the reduced resistance to insertion is further improved by the elastic deflectability of the spring section, since the position and angle of the ramp adapts to the respective conductor that is inserted.
  • the ramp In a non-deflected state, can, for example, enclose an angle of between 30 and 60 degrees with an inserted conductor, while in a deflected state it encloses an angle of between 10 and 40 degrees with the conductor.
  • a contact point forming a clamping point between a connectable electrical conductor and the busbar can be produced by the spring section of the contact leg and by the clamping leg of the clamping spring.
  • a terminal point is understood to mean an area of electrical contact between a connection element, for example a busbar, and an electrical conductor. Due to the contact point formed by the spring section and the contact point formed by the clamping leg, there are always two contact points when a conductor is inserted, so that the reliability of the contact and the overall surface pressure acting on the conductor is improved. Of course, the clamping force of the spring section and the clamping leg can be distributed to further contact points by means of suitable leg shapes.
  • the spring section of the contact leg of the clamping spring can have an end stop for the electrical conductor. This ensures reliable chamber separation for multiple connection terminals, such as double connection terminals. Furthermore, the length of the inserted conductor section is limited and the conductor end is protected from contact with other terminal components.
  • the one-piece formation of the end stop with the contact leg of the clamping spring provides a particularly simple design of a conductor stop, since the end stop does not have to be provided by other components that are more expensive to produce, such as the insulating housing.
  • the end stop itself, like the rest of the spring section, can be elastically deflected for optimal adaptation of the stop to an inserted conductor and reduced insertion resistance.
  • a design of the end stop is useful in which the end stop has a higher rigidity than the rest of the spring section.
  • the ramp and the end stop work together in a favorable manner.
  • the ramp shifts or gives way to an inserted conductor, so that it is guided to the end stop with little insertion resistance.
  • conductors block on the bevel and, at the expense of the contact overlap, cannot be guided to a possible stop, or only with increased conductor insertion force.
  • the ability of the spring section to move ensures that the end stop is reached even when the insertion force is low.
  • the shifting of the spring section as a function of the conductor diameter ensures that the conductor end hits the end stop and is not guided past it, as can occur, for example, with conductors with a small diameter and end stops molded in one piece with insulating housings.
  • the conductor rail and/or the insulating material housing can have an indentation, a recess or an opening for receiving the end stop.
  • the end stop can be made larger or longer than would be possible in the case of a conductor connection terminal with a busbar that is closed in the area of the end stop and/or a closed insulating material housing. In the non-deflected state, the end stop can thus dip at least in sections into the busbar and/or the insulating housing. Such a retractable end stop thus contributes to a more compact design. Even when inserted conductors with a small cable diameter, in which the spring section is possibly deflected only slightly, the end stop can at least partially from the Busbar and / or the insulating material be added.
  • the at least partial accommodation in the conductor rail and/or the insulating material housing provides a further bearing point for the clamping spring and thus mechanically stabilizes the contact leg of the clamping spring overall. Due to the indentation, recess or opening of the conductor rail and/or the insulating material housing, a greater range of conductor diameters suitable for the conductor connection terminal can be realized due to the greater possible extension of the end stop. In this way, reliable chamber separation can also be guaranteed for larger conductor diameters with multiple connection terminals.
  • the end stop can be directly connected to the run-up slope of the spring section of the contact arm.
  • a particularly short and compact design of the clamping spring is hereby provided.
  • the run-up slope goes directly into the end stop and leads an inserted electrical conductor directly to the stop.
  • the end stop can protrude at an angle from the ramp. Taking into account the angle of attack of the ramp with respect to an inserted conductor, it is favorable if the end stop protrudes from the ramp at an obtuse angle.
  • the angle between the end stop and the ramp can result in the end stop extending transversely, ie at a right angle, to the conductor insertion direction. As a result, the conductor end of an inserted conductor hits the surface of the end stop evenly.
  • a shoulder can also be provided on the spring section of the contact leg between the end stop and the ramp, which runs essentially at right angles to the end stop.
  • the conductor rail can have an elevation directed toward the conductor at at least one contact point, which forms a clamping point for a connectable electrical conductor.
  • An elevation is understood to mean exposed material of the conductor rail.
  • the elevation is present, for example, as a projection, nose, heel, bulge or elevation.
  • the elevation can be accompanied by an increase in cross-section or displacement of the cross-section of the conductor rail.
  • the elevation at a contact point improves the contact between the busbar and the conductor. At the more clearly defined contact points, there is a concentrated and focused current transition.
  • the busbar can have elevations depending on the number of contact points. For example, with two contact points, each of which is formed by the clamping leg and the spring section of the contact leg, there can be two elevations.
  • the elevations of the busbar are advantageously present in a first section of the busbar, which runs essentially parallel to the conductor insertion direction and on which an inserted conductor comes to rest and make contact.
  • the spring section of the contact leg can have a bend between the ramp and the support on the conductor rail.
  • a bend is understood to mean an angled course of the contact leg with a change in direction or a change in the extension in the region of the bend or a bend point that characterizes the bend.
  • a break point forms a defined pivot point about which the spring section can be deflected.
  • a transition from a stiffer section of the contact leg to an elastic, deflectable section of the contact leg can also take place at the bending point.
  • Several kinks can also be provided, so that the spring section has a course that is angled several times. When space is tight, the spring section is effectively lengthened by a multiply angled course, thus increasing the possible spring force or elasticity of the spring section that can be achieved.
  • the clamping leg of the clamping spring can have a bend between its free end and the spring bow.
  • the free end of the clamping limb can run steeper in the direction of the conductor rail than the section of the clamping limb running in the direction of the spring arc. Due to the steeper start, the clamping leg forms a clamping edge on an inserted conductor, which concentrates the pressure on a smaller area and thus enables improved current transfer.
  • the width of the clamping spring is reduced in the direction of conductor insertion, thus enabling a shorter design of the conductor connection terminal.
  • the free end of the clamping leg can run steeper in the direction of a first section of the busbar, which runs essentially parallel to the conductor insertion direction and on which an inserted conductor comes to rest and make contact.
  • the length of the clamping leg can correspond to the length of the contact leg, starting from the apex of the spring bow to the beginning of the ramp. Since the clamping limb can be elastically deflected depending on the conductor diameter of the inserted conductor, the ramp does not impede the deflection and displacement of the clamping limb according to the present embodiment. This supports the achievable wide range of conductor diameters that can be used with the conductor connection terminal.
  • the conductor connection terminal can be designed as a double connection with a preferably symmetrical structure, in which a busbar and clamping spring are arranged in one half, essentially mirrored in relation to one another, and are surrounded by a common insulating material housing.
  • a busbar and clamping spring are arranged in one half, essentially mirrored in relation to one another, and are surrounded by a common insulating material housing.
  • the space advantages achieved according to the invention are used particularly effectively, since the compactness of the clamp construction comes into play on both sides of the double arrangement.
  • the installation of the double connection is also made easier, since there are no structural differences between the two connection sides and only the mirror image of the two connection sides has to be taken into account during production.
  • a conductor connection terminal with two opposite conductor entry openings is to be assumed in particular, ie the conductors are inserted into the connection terminal from two sides towards one another in opposite conductor entry directions.
  • multi-conductor connection terminals are not limited to double connections, but also include, for example, triple connections in which three electrical conductors are plugged onto one another in a T-shape.
  • FIG. 1 shows a conductor terminal 1 in a cross-sectional view.
  • An electrical conductor 2 can be inserted into the conductor connection terminal 1 in a conductor insertion direction R L , as indicated schematically.
  • a conductor 2 that is still being inserted can be seen, which has not yet reached its end position in the conductor connection terminal 1 .
  • the electrical conductor 2 can be a single-core or multi-core electrical line.
  • the conductor end of the conductor 2 is advantageously stripped to ensure adequate electrical contact in the conductor terminal 1 to ensure.
  • the conductor connection terminal 1 has a conductor rail 3 as an electrically conductive component which is to be electrically connected to an inserted conductor 2 .
  • the conductor rail 3 can have several sections 3a, 3b, 3c.
  • a first section 3a runs essentially parallel to the conductor insertion direction R L .
  • the first section 3a is the section of the conductor rail 3 against which an inserted conductor 2 rests and which the conductor 2 makes electrical contact with.
  • a clamping spring 4 presses the conductor 2 against the first section 3a of the busbar 3.
  • the second section 3b of the busbar 3 protrudes at an angle from the first section 3a, for example it can protrude at right angles, so that the second section 3b is essentially transverse extends to the first portion 3a.
  • the second section 3b can run transversely to the conductor insertion direction R L .
  • a contact leg 6 of the clamping spring 4 is mounted on the second section 3b.
  • the second section 3b can merge into a third section 3c of the busbar 3 .
  • the transition can be through an angle or a bend.
  • the third section 3c can run parallel to the first section 3a or to the conductor insertion direction R L .
  • the third section 3c is located on a side of the conductor terminal 1 opposite the first section 3a.
  • the legs of the clamping spring 4 are arranged between the first section 3a and the third section 3c of the busbar 3.
  • the busbar 3 has a simple geometry and can be mass-produced without any problems.
  • the conductor terminal 1 has an insulating housing 22 which protects the components of the conductor terminal 1 from external physical and chemical influences and consists of an electrically insulating material such as plastic.
  • the insulating material housing 22 surrounds the conductor terminal 1 almost completely, but contains at least one conductor insertion opening 23 for inserting an electrical conductor 2 into the conductor terminal 1.
  • the conductor terminal 1 has a clamping spring 4.
  • the clamping spring 4 has a clamping leg 5 and a contact leg 6.
  • the clamping leg 5 and the contact leg 6 are connected to one another via a spring bow 7, so that at least at the base of the clamping spring 4 results in a U-shape.
  • the free end 20 of the contact leg 6 is arranged behind the free end 19 of the clamping leg 5 .
  • the clamping spring 4 is supported with its spring arc 7 against the insulating material housing 22 , while the clamping leg 5 and the contact leg 6 protrude into the interior space enclosed by the insulating material housing 22 , also known as the conductor connection space.
  • the contact leg 6 is additionally mounted on the busbar 3 , for example on the second section 3b of the busbar 3 , so that the contact leg 6 is also supported against the busbar 3 .
  • the busbar 3 has a recess in its second section 3b, through which the contact leg 6 is guided, so that the contact leg 6 is mounted on the second section 3b of the busbar 3 .
  • an elastic, deflectable spring section 9 with a ramp 10 for guiding the conductor 2 extends.
  • the contact leg 6 thus extends, starting from the spring arc 7, in the direction of the conductor 2 and, with its spring section 9, forms, in addition to the clamping leg 5, a further spring support for clamping the conductor 2 against the busbar 3. Due to the elasticity of the spring section 9, this becomes loose when a Conductor 2 shifts depending on the conductor diameter and thus adapts to different conductor cross-sections. In the case of larger conductor diameters, the spring section 9 is pressed further down by the conductor 2 in the direction of the third section 3c of the busbar 3 . With smaller conductor diameters, the spring section 9 is deflected less.
  • the spring force of the spring section 9 acts on the conductor 2, so that the conductor 2 is pressed against the conductor rail 3, in this case against the first section 3a of the conductor rail 3, in accordance with its diameter.
  • Contact points are formed between the conductor 2 and the conductor rail 3 as a result of the spring forces of the spring section 9 and the clamping leg 5 .
  • a contact point forming a clamping point between the conductor 2 and the busbar 3.
  • a concentrated current transfer takes place at these contact points, which can be further improved by an elevation 16 of the busbar 3 at at least one contact point.
  • the conductor rail 3 can thus have an elevation 16 directed toward the conductor 2 at at least one contact point, which forms a clamping point for a connectable electrical conductor 2 .
  • the ramp 10 is also elastic and deflectable, so that it is displaced when the conductor 2 is inserted and thus offers only a slight resistance to the inserted conductor 2.
  • the function of the ramp 10 thus no longer depends on the conductor insertion force, but on the spring force of the spring section 9 .
  • the ramp 10 serves to limit the conductor insertion movement and to guide the conductor 2 again in the direction of the conductor rail 3 or the first section 3a of the conductor rail 3, even if it is plugged in at an angle, in order to correct the conductor insertion direction.
  • the ramp 10 runs as shown in figure 1 as can be seen, at an angle to the conductor 2 or to the conductor insertion direction R L in order to allow the conductor 2 to gradually run up. In a non-deflected state, the ramp 10 can, for example, enclose an angle of between 30 and 60 degrees with an inserted conductor.
  • FIG 1 shows the clamping leg 5 of the clamping spring 4 with a bend 18 between its free end 19 and the spring arc 7, through which the free end 19 of the clamping leg 5 runs steeper in the direction of the busbar 3, here in the direction of the first section 3a of the busbar 3 than the section of the clamping leg 5 running in the direction of the spring arc 7 .
  • the clamping leg 5 forms a clamping edge in the area of its free end 19 and thus in the area of the contact point with the conductor rail 3 .
  • Such a steep start-up Clamping edge forms a sharp-edged force application and thus an improved contact point compared to flatter force application angles, so that improved current transfer and more reliable contact can be determined. In particular, this has a positive effect on the conductor holding force and conductor contact pressure.
  • the contact leg 6 has a bend 17 between the support 8 and the ramp 10.
  • the ramp 10 therefore does not merge directly or straight into the section of the contact leg 6 resting on the support 8, but first experiences a change in direction, in particular around the ramp 10 in the Connection to the spring arc 7 and the contact leg 6 to be positioned at a height that is more favorable for their function.
  • a defined pivot point results from the bending point, around which the spring section 9 can be pivoted and thus displaced.
  • a further change in direction of the contact leg 6 is shown between the bend 17 and the support 8 .
  • the spring section 9 is effectively lengthened by the multiply angled course of the contact leg 6 and thus the deflectability of the spring section 9 is increased.
  • the spring section 9 of the contact leg 6 of the clamping spring 4 has an end stop 12 for the electrical conductor 2.
  • the insertion length of the conductor 2 is thereby limited.
  • the conductor end of the conductor 2 is received by the end stop 12 and protected from contact with other terminal components.
  • a chamber separation is thus also ensured, as is desired in the case of multiple connections such as, for example, double connections.
  • a constant contact overlap is achieved even with different conductor cross-sections.
  • the end stop 12 is designed in one piece with the contact leg 6 of the clamping spring 4, so that a ladder stop that is particularly easy to produce is provided.
  • the end stop 12 can protrude beyond the conductor end of the conductor 2 through an opening 13 in the conductor rail 3 without being blocked by the conductor rail 3 .
  • the end stop 12 can be a little longer be carried out and thus reliably fulfills its function even with larger conductor diameters.
  • the end stop 12 can also be designed to be elastic or stiffer than the spring section 9 and, for example, have a material reinforcement to ensure a more stable stop.
  • the end stop 12 is automatically guided to the correct position for receiving the end of the conductor when the spring section 9 is displaced by an inserted conductor 2.
  • the conductor 2 reliably reaches the desired position in the area of the end stop 12 as a result of the ramp 10, which is also shifted can happen.
  • the conductor connection terminal 1 has a push button 24 for actuating it.
  • the clamping leg 5 can be manually shifted in the direction of the contact leg 6 in order to be able to insert or release a conductor 2, in particular also stranded conductors 2, more easily and to be able to position it between the clamping leg 6 and the busbar 3.
  • the length L 1 of the clamping leg 5, starting from the apex 21 of the spring arc 7 to the free end 19 of the clamping leg 5, corresponds to the length L 2 of the contact leg 6, starting from the apex 21 of the spring arc 7 to the beginning of the ramp 10.
  • the ramp 10 in the present embodiment does not prevent the deflection of the clamping leg 5. Even conductors 2 with larger diameters can be clamped by the clamping leg 5 without the clamping leg 5 being pushed by parts of the contact leg 6 is hampered in its deflection.
  • the busbar 3 and the clamping spring 4 can be pre-assembled as a contact insert and against a demolding direction R E of the insulating housing 22 in one Mounting direction R M are used in the insulating housing 22. This ensures a particularly simple and cost-effective manufacture and assembly of the conductor connection terminal 1 . This is made possible, among other things, by the simple geometry of the busbar 3 and the clamping spring 4, since, for example, the end stop 12 and the starting bevel 10 can already be parts of the clamping spring 4 and thus of the contact insert and therefore do not have to be formed by corresponding shapes of the insulating housing 22. which in turn could complicate the assembly of the contact insert.
  • figure 2 shows an embodiment of the conductor connection terminal 1, which differs only slightly from that in figure 1 shown embodiment is different. To avoid repetition, the explanations are given figure 1 referenced and in the following only the differences figure 1 received.
  • the insulating material housing 22 has an indentation 14 for receiving the end stop 12 .
  • This indentation 14 is in figure 2 designed as a pocket-shaped recess in the insulating material housing 22, in which the free end 20 of the end stop 12 can dip when there is no or only a slight deflection of the spring section 9. In this way, additional mechanical protection and stabilization of the end stop 12 is made possible with small conductor diameters.
  • the end stop 12 can be compared to the in figure 1 shown embodiment have a greater length, so that the conductor terminal 1 also covers applications for conductors with larger diameters. A longer end stop 12 also improves any desired chamber separation of the conductor connection terminal 1.
  • the Figures 3 and 4 show another embodiment of the invention, in which the conductor terminal 1 is designed as a double connection.
  • the double connection has in the Figures 3 and 4 a symmetrical structure in which a busbar 3 and clamping spring 4 are arranged mirrored to one another in a terminal half K 1 , K 2 and are surrounded by a common insulating material housing 22 .
  • a conductor 2 In figure 3 is in the clamp half K 2 of the double connection a conductor 2 fully inserted into the conductor terminal 1, while in the clamp half K 1 no conductor is present.
  • a conductor 2 In clamp half K 2 of the double connection, a conductor 2 is fully inserted into conductor connection terminal 1, while clamp half K 1 shows a conductor 2 that is still being inserted and has not yet fully reached its end position in conductor connection terminal 1.
  • the conductor rail 3 can be divided into three sections 3a, 3b, 3c in each clamp half K 1 , K 2 .
  • a first section 3a runs essentially parallel to the respective conductor insertion direction R L .
  • the first section 3a is the section of the conductor rail 3 against which the inserted conductor 2 rests and which the conductor 2 makes electrical contact with.
  • a clamping spring 4 presses the conductor 2 against the first section 3a of the busbar 3.
  • the second section 3b of the busbar 3 protrudes at an angle from the first section 3a, for example it can protrude at right angles, so that the second section 3b is essentially transverse extends to the first portion 3a.
  • the second section 3b can run transversely to the conductor insertion direction R L .
  • a contact leg 6 of the clamping spring 4 is mounted on the second section 3b.
  • the second section 3b can merge into a third section 3c of the busbar 3 .
  • the transition can be through an angle or a bend.
  • the third section 3c can in turn run parallel to the first section 3a or to the conductor insertion direction R L .
  • the third section 3c is located on a side of the conductor terminal 1 opposite the first section 3a.
  • the legs of the clamping spring 4 are arranged between the first section 3a and the third section 3c of the busbar 3.
  • the busbar 3 has a simple geometry and can be mass-produced without any problems.
  • each clamp half K 1 , K 2 there can be a separate busbar 3 in each clamp half K 1 , K 2 , so that the busbars 3 are not connected to one another. It is favorable, however, if a common busbar 3 for both clamp halves K 1 , K 2 is provided and the busbar 3 of the clamp half K 1 thus, for example in the third section 3c, in the busbar 3 of the clamp half K 2 merges.
  • the conductor terminal 1 has a common insulating housing 22 for both clamp halves K 1 , K 2 , which protects the components of the conductor terminal 1 from external physical and chemical influences and consists of an electrically insulating material such as plastic.
  • the insulating housing 22 surrounds the conductor terminal 1 almost completely, but contains two conductor insertion openings 23 for inserting electrical conductors 2 into the conductor terminal 1.
  • the conductor terminal 1 has a clamping spring 4 in each clamp half K 1 , K 2.
  • Each of the two clamping springs 4 has a clamping leg 5 and a contact leg 6.
  • the clamping leg 5 and the contact leg 6 are connected to one another via a spring bow 7, so that at least on the Base of the clamping springs 4 results in a U-shape.
  • the free end 20 of the contact leg 6 is arranged behind the free end 19 of the clamping leg 5 .
  • the clamping spring 4 is supported with its spring arc 6 against the insulating material housing 22 , while the clamping leg 5 and the contact leg 6 protrude into the interior space enclosed by the insulating material housing 22 , also known as the conductor connection space.
  • the contact leg 6 is additionally mounted on the busbar 3 , in the present case on the respective second section 3b of the busbar 3 , so that the contact leg 6 is also supported against the busbar 3 .
  • the busbar 3 has a recess in its respective second section 3b, through which the contact leg 6 is guided, so that the contact leg 6 is mounted on the second section 3b of the busbar 3 .
  • an elastic, deflectable spring section 9 with a ramp 10 for guiding the conductor 2 extends.
  • each clamping spring 4 thus extends, starting from the spring bow 7 in the direction of the conductor 2 and, with its spring section 9, forms, in addition to the clamping leg 5, a further spring support for clamping the respective conductor 2 against the busbar 3. Due to the elasticity of the spring section 9 this shifts when inserting a conductor 2 depending on the conductor diameter and thus adapts to different conductor cross sections. In the case of larger conductor diameters, the spring section 9 is pressed further down by the respective conductor 2 in the direction of the third section 3c of the busbar 3 . With smaller conductor diameters, the spring section 9 is deflected less.
  • the spring force of the spring section 9 acts on the conductor 2, so that the conductor 2 is pressed against the busbar 3, here against the first section 3a of the busbar 3, regardless of its diameter.
  • the spring forces of the spring portion 9 and the clamping leg 5 form, as in the Figures 3 and 4 shown, two contact points 11 between the respective conductor 2 and the busbar 3 from.
  • a concentrated current transfer takes place at these contact points 11 , which can be further improved by elevations 16 of the busbar 3 at the contact points 11 .
  • the conductor rail 3 can thus have an elevation 16 directed towards the conductor 2 at at least one contact point 11 which forms a clamping point for a connectable electrical conductor 2 .
  • the ramp 10 is also elastic and deflectable, so that it is displaced when a conductor 2 is inserted and thus offers only a slight resistance to the inserted conductor 2.
  • the function of the ramp 10 thus no longer depends on the conductor insertion force, but on the spring force of the spring section 9 .
  • the ramp 10 is used to limit the conductor insertion movement and to guide the conductor 2 again in the direction of the conductor rail 3 or the first section 3a of the conductor rail 3, even if it is plugged in at an angle, in order to correct the conductor insertion direction.
  • the ramp 10 runs, as in the Figures 3 and 4 as can be seen, at an angle to the conductor 2 or to the conductor insertion direction R L in order to allow the conductor 2 to gradually run up. In a non-deflected state, the ramp 10 can, for example, enclose an angle of between 30 and 60 degrees with an inserted conductor.
  • each clamping spring 4 has an end stop 12 for the respective electrical conductor 2. This limits the insertion length of the conductor 2.
  • the conductor end 2 is received by the end stop 12 and protected against contact with other terminal components.
  • a chamber separation of the present double connection is thus also ensured, so that a chamber for one conductor connection each is formed in each clamp half K 1 , K 2 .
  • the end stop 12 is advantageously, as in the Figures 3 and 4 shown, designed in one piece with the contact leg 6 of each clamping spring 4, so that a conductor stop that is particularly easy to produce is provided.
  • the end stop 12 directly adjoins the ramp 10 of the spring section 9 of the contact arm 6 .
  • the end stop 12 protrudes at an angle ⁇ from the ramp.
  • This angle ⁇ is preferably an obtuse angle in order to allow the conductor 2 to be inserted as far as possible while at the same time ensuring that the end of the conductor is received by the end stop 12 .
  • the end stop 12 is automatically guided to the correct position for receiving the end of the conductor when the spring section 9 is displaced by an inserted conductor 2.
  • the conductor 2 reliably reaches the desired position in the area of the end stop 12 by the ramp 10 that has also been displaced.
  • the conductor 2 is prevented from hitting the end stop 12 is guided past, as can occur, for example, with conductors with a small diameter and end stops molded in one piece with insulating material housings.
  • the function of the ramp 10 and the end stop 12 can be understood particularly well in FIG.
  • a conductor 2 that is being inserted hits the ramp 10 and thereby begins to deflect the spring section 9. Consequently, the spring section 9 gives way to the conductor 2 and the ramp 10 also moves downwards, so the angle between the ramps 10 and the conductor 2 is reduced.
  • the insertion resistance when inserting the conductor 2 is reduced by this displacement and angle reduction.
  • the conductor 2 is pushed further in the conductor insertion direction R L until the end of the conductor hits the end stop 12, as can be seen in the clamp half K 2 . In this end position, the spring section 9 is no longer displaced, but the spring section 9 pretensions the conductor 2 with its spring force and thus presses it against the first section 3a of the busbar 3.
  • the conductor terminal 1 To actuate the conductor terminal 1, it has a pusher 24 in each terminal half K 1 , K 2 .
  • the clamping leg 5 can be manually shifted in the direction of the contact leg 6 in order to be able to insert a conductor 2 more easily and position it between the clamping leg 6 and the busbar 3 .
  • figure 5 shows a side view of the conductor terminal 1 in the conductor insertion direction R L . From this view, the conductor 2 inserted into the conductor insertion opening 23 can be seen in cross section. The conductor 2 is held by the clamping spring 4 pressed against the busbar 3, in this case against the first section 3a of the busbar 3. The conductor terminal 1 is surrounded by a housing 22 made of insulating material. A pusher 24 protrudes from the insulating material housing 22, with which the clamping spring 4 can be actuated, in particular displaced, in order to be able to insert the conductor 2 into the conductor connection terminal 1 more easily.
  • FIG. 1 shows another embodiment of the invention, in which the conductor connection terminal 1 is in the form of a double connection.
  • the conductor connection terminal 1 shown two electrical conductors can be inserted into the conductor insertion openings 23 lying opposite one another, for example, so that they are plugged towards one another.
  • the description concentrates on the conductor connection in the right half of the figure.
  • Additional terminal components such as additional clamping springs, can be provided for connecting additional conductors.
  • the conductor terminal 1 in figure 6 has an insulating material housing 22 which protects the components of the conductor terminal 1 from external physical and chemical influences and consists of an electrically insulating material such as plastic.
  • the insulating housing 22 surrounds the conductor terminal 1, but contains openings such as the conductor insertion openings 23 for inserting electrical conductors into the conductor terminal 1.
  • the conductor terminal 1 has a busbar 3, which can be divided into four sections 3a, 3b, 3c, 3d.
  • a first section 3a runs essentially parallel to the conductor insertion direction R L .
  • the first section 3a is the section of the conductor rail 3 against which an inserted conductor rests and which the conductor makes electrical contact with.
  • a clamping spring 4 presses the conductor against the first section 3a of the busbar 3.
  • the second section 3b of the busbar 3 protrudes at an angle from the first section 3a, for example it can protrude at right angles, so that the second section 3b is essentially transverse to extends the first section 3a.
  • the second section 3b can run transversely to the conductor insertion direction R L .
  • a contact leg 6 of the clamping spring 4 is mounted on the second section 3b.
  • the first section 3a can merge into a third section 3c, in particular via an angle or a bend.
  • the third section 3c preferably runs approximately parallel to the second section 3b.
  • the third section 3c transitions into a fourth section 3d, in particular via an angle or a bend.
  • the clamping spring 4 is supported on the one hand against the insulating housing 22 and on the other hand with its contact leg 6 against the second section 3b of the busbar 3 .
  • the clamping spring 4 has a clamping leg 5 which is connected to the contact leg 6 via a spring bow 7 .
  • the contact leg 6 has an elastic, deflectable spring section 9 with a ramp 10 for guiding a conductor to be connected.
  • the ramp 10 is also elastic and deflectable, so that it is displaced when a conductor is inserted and thus offers only a slight resistance to the inserted conductor.
  • the function of the ramp 10 thus no longer depends on the conductor insertion force, but on the spring force of the spring section 9 .
  • the ramp 10 serves to limit the conductor insertion movement and to lead the conductor back towards the busbar 3 or the first section 3a of the busbar 3, even if it is plugged in at an angle, in order to correct the conductor insertion direction.
  • the spring section 9 of the contact leg 6 of the clamping spring 4 has an end stop 12 for an inserted conductor. This limits the insertion length of the conductor. The conductor end of the conductor is received by the end stop 12 and protected from contact with other clamp components. In particular, a chamber separation is thus ensured.
  • the end stop 12 is designed in one piece with the contact leg 6 of the clamping spring 4, so that a ladder stop that is particularly easy to produce is provided.

Landscapes

  • Installation Of Bus-Bars (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Claims (12)

  1. Borne de raccordement de conducteur (1) pour raccorder des conducteurs électriques (2) à une barre conductrice (3),
    dans laquelle
    la borne de raccordement de conducteur (1) comprend un boîtier en matériau isolant (22), une barre conductrice (3) et un ressort de serrage (4), et
    le ressort de serrage (4) comprend une branche de serrage (5) et une branche d'appui (6) logée sur la barre conductrice (3), qui sont reliées l'une à l'autre par un arc de ressort (7),
    en partant de l'arc de ressort (7) en aval du logement (8) de la branche d'appui (6) sur la barre conductrice (3), la branche d'appui (6) comprend une portion de ressort (9) élastique, pouvant être déviée, avec un plan incliné (10) pour le guidage du conducteur (2) à raccorder,
    une première portion (3a) de la barre conductrice (3) s'étend sensiblement parallèlement à la direction d'insertion de conducteur (RL), et une deuxième portion (3b) de la barre conductrice (3) fait saillie de la première portion (3a) de la barre conductrice (3) selon un angle,
    caractérisée en ce que
    la deuxième portion (3b) de la barre conductrice (3) présente un évidement à travers lequel la branche d'appui (6) du ressort de serrage (4) est guidée, de sorte que la branche d'appui (6) est logée sur la deuxième portion (3b) de la barre conductrice (3).
  2. Borne de raccordement de conducteur (1) selon la revendication 1, caractérisée en ce que la portion élastique (9) de la branche d'appui (6) et la branche de serrage (5) du ressort de serrage (4) permettent de réaliser un point de contact respectif (11), formant un emplacement de serrage, entre un conducteur électrique (2) à raccorder et la barre conductrice (3).
  3. Borne de raccordement de conducteur (1) selon la revendication 1 ou 2, caractérisée en ce que la portion élastique (9) de la branche d'appui (6) du ressort de serrage (4) comprend une butée de fin de course (12) pour le conducteur électrique (2).
  4. Borne de raccordement de conducteur (1) selon la revendication 3, caractérisée en ce que la barre conductrice (3) et/ou le boîtier en matériau isolant (22) présente(nt) un renfoncement (14), un évidement ou une ouverture (13) pour recevoir la butée de fin de course (12).
  5. Borne de raccordement de conducteur (1) selon la revendication 3 ou 4, caractérisée en ce que la butée de fin de course (12) se raccorde directement au plan incliné (10) de la portion élastique (9) de la branche d'appui (6).
  6. Borne de raccordement de conducteur (1) selon l'une des revendications 3 à 5,
    caractérisée en ce que la butée de fin de course (12) fait saillie du plan incliné (10) selon un angle (α).
  7. Borne de raccordement de conducteur (1) selon l'une des revendications 3 à 6,
    caractérisée en ce qu'un décrochement (15) est prévu sur la portion élastique (9) de la branche d'appui (6) entre la butée de fin de course (12) et le plan incliné (10), ledit décrochement s'étendant sensiblement à angle droit par rapport à la butée de fin de course (12).
  8. Borne de raccordement de conducteur (1) selon l'une des revendications précédentes,
    caractérisée en ce que la barre conductrice (3) présente, en au moins un point de contact (11) formant un emplacement de serrage pour un conducteur électrique (2) à raccorder, un bossage (16) dirigé vers le conducteur (2).
  9. Borne de raccordement de conducteur (1) selon l'une des revendications précédentes,
    caractérisée en ce que la portion élastique (9) de la branche d'appui (6) présente un coude (17) entre le plan incliné (10) et le logement (8) sur la barre conductrice (3).
  10. Borne de raccordement de conducteur (1) selon l'une des revendications précédentes,
    caractérisée en ce que la branche de serrage (5) présente un coude (18) entre son extrémité libre (19) et l'arc de ressort (7).
  11. Borne de raccordement de conducteur (1) selon l'une des revendications précédentes,
    caractérisée en ce que, vue dans la direction d'insertion de conducteur (RL), l'extrémité libre (20) de la branche d'appui (6) est disposée derrière l'extrémité libre (19) de la branche de serrage (5).
  12. Borne de raccordement de conducteur (1) selon l'une des revendications précédentes,
    caractérisée en ce la borne de raccordement de conducteur (1) est réalisée sous forme de raccord double avec une structure de préférence symétrique, dans laquelle une barre conductrice (3) et un ressort de serrage (4) sont respectivement disposés dans une moitié de borne (K1, K2) de manière sensiblement symétrique l'un par rapport à l'autre et sont entourés d'un boîtier en matériau isolant (22) commun.
EP21150398.2A 2020-01-09 2021-01-06 Borne de raccordement de conducteur Active EP3849019B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202020100088.8U DE202020100088U1 (de) 2020-01-09 2020-01-09 Leiteranschlussklemme

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EP3849019A1 EP3849019A1 (fr) 2021-07-14
EP3849019B1 true EP3849019B1 (fr) 2023-04-05

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EP (1) EP3849019B1 (fr)
CN (1) CN113113786A (fr)
DE (1) DE202020100088U1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113782991B (zh) * 2021-09-14 2023-07-14 苏州华旃航天电器有限公司 一种具有快速弹性的锁线结构
BE1029961B1 (de) * 2021-11-25 2023-06-26 Phoenix Contact Gmbh & Co Anschlussanordnung und Anschlussklemme

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Publication number Priority date Publication date Assignee Title
DE19735786A1 (de) * 1997-08-18 1999-02-25 Abb Patent Gmbh Schraubenlose Anschlußklemme
JP2005235476A (ja) * 2004-02-18 2005-09-02 Smk Corp 防水中継コネクタ
DE102011052387A1 (de) * 2011-08-03 2013-02-07 Phoenix Contact Gmbh & Co. Kg Federdruckstück zur Herstellung eines elektrischen Federkontaktelements und elektrischer Steckverbinder
CN102354831B (zh) * 2011-08-15 2013-10-16 浙江正泰建筑电器有限公司 无螺纹接线端子装置
ES2662873T3 (es) * 2014-05-23 2018-04-10 Berker Gmbh & Co. Kg Terminales de conexión con sujeción accionada por resorte
DE102015119247A1 (de) * 2015-11-09 2017-05-11 Wago Verwaltungsgesellschaft Mbh Verbindungsklemme
JP6970611B2 (ja) * 2017-12-27 2021-11-24 パナソニックＩｐマネジメント株式会社 端子装置及びこれを備えた電力変換装置
CN109361078B (zh) * 2018-10-10 2021-02-09 宁波公牛电器有限公司 一种接线结构及开关插座

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DE202020100088U1 (de) 2021-04-12
EP3849019A1 (fr) 2021-07-14
CN113113786A (zh) 2021-07-13

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